// Copyright 2021 Wechat Group, Tencent
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <functional>
#include <map>
#include <memory>
#include <string>
#include <tuple>

#include "allocators/tfcc_flexallocator.h"
#include "utils/tfcc_spinlock.h"

namespace tfcc {

class Scope;
template <class T>
class Constant;

template <class T>
class ConstantManager {
  FlexAllocator _allocator;
  std::map<std::tuple<const Scope*, std::string>, std::unique_ptr<Constant<T>>> _constants;
  std::multimap<const Scope*, std::string> _names;
  SpinLock _mtx;

 public:
  ConstantManager();
  ~ConstantManager();

  Allocator& getAllocator() { return _allocator; }

  Constant<T>& getConstant(const Scope* scope, const std::string& name);
  void removeConstants(const Scope* scope);
};

}  // namespace tfcc
